GrpString: Patterns and Statistical Differences Between Two Groups of
Strings

Methods include converting series of event names to strings, finding common patterns
in a group of strings, discovering featured patterns when comparing two groups of strings as well
as the number and starting position of each pattern in each string, obtaining transition matrix,
computing transition entropy, statistically comparing the difference between two groups of strings,
and clustering string groups. Event names can be any action names or labels such as events in log
files or areas of interest (AOIs) in eye tracking research.